Tanbara Dam (玉原ダム, which can be mistakenly read Tamahara Dam[1]) is a rock-fill embankment dam impounding the headwaters of the Hotchi River, a Tone River tributary in Gunma Prefecture of Japan. It is located 14 kilometres (8.7 mi) north of Numata. It creates the upper reservoir for the 1,200 megawatts (1,600,000 hp) Tamahara Pumped Storage Power Station (玉原発電所). Construction began in 1973 and the dam was complete in 1981 while the power station was commissioned in 1986. It is 116 metres (381 ft) tall and withholds a reservoir with a storage capacity of 14,800,000 m3 (11,999 acre⋅ft). Of that capacity, 13,000,000 cubic metres (11,000 acre⋅ft) is active (or useful) for power generation. The lower reservoir for the pumped-storage power station is created by the Fujiwara Dam, located 4 km (2 mi) to the northwest on another Tone River tributary. Power is generated during periods of high energy demand and pumping occurs during times when energy demand is low such as at night. The power station contains four 300 megawatts (400,000 hp) reversible Francis turbine pump-generators which serve to both pump water and generate electricity. The upper Tamahara Reservoir is at an elevation of 1,177 metres (3,862 ft) and the lower Fujiwara Reservoir is at 651 metres (2,136 ft) which affords the power station an effective hydraulic head of 518 metres (1,699 ft). When pumping, the pump-generators can move up to 210 cubic metres per second (7,400 cu ft/s) of water and when generating, they discharge up to 276 cubic metres per second (9,700 cu ft/s).[2][1]
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^ ab"Tokyo Electric Power Co. power plant Tamahara" (in Japanese). Suiryoku. Retrieved 17 February 2012.
^"Hydropower & Dams in South and East Asia" (PDF). Hydropower and Dams. p. 9. Retrieved 3 October 2010.
April 15, 2024
tamahara, tanbara, 玉原ダム, which, mistakenly, read, rock, fill, embankment, impounding, headwaters, hotchi, river, tone, river, tributary, gunma, prefecture, japan, located, kilometres, north, numata, creates, upper, reservoir, megawatts, tamahara, pumped, stora. Tanbara Dam 玉原ダム which can be mistakenly read Tamahara Dam 1 is a rock fill embankment dam impounding the headwaters of the Hotchi River a Tone River tributary in Gunma Prefecture of Japan It is located 14 kilometres 8 7 mi north of Numata It creates the upper reservoir for the 1 200 megawatts 1 600 000 hp Tamahara Pumped Storage Power Station 玉原発電所 Construction began in 1973 and the dam was complete in 1981 while the power station was commissioned in 1986 It is 116 metres 381 ft tall and withholds a reservoir with a storage capacity of 14 800 000 m3 11 999 acre ft Of that capacity 13 000 000 cubic metres 11 000 acre ft is active or useful for power generation The lower reservoir for the pumped storage power station is created by the Fujiwara Dam located 4 km 2 mi to the northwest on another Tone River tributary Power is generated during periods of high energy demand and pumping occurs during times when energy demand is low such as at night The power station contains four 300 megawatts 400 000 hp reversible Francis turbine pump generators which serve to both pump water and generate electricity The upper Tamahara Reservoir is at an elevation of 1 177 metres 3 862 ft and the lower Fujiwara Reservoir is at 651 metres 2 136 ft which affords the power station an effective hydraulic head of 518 metres 1 699 ft When pumping the pump generators can move up to 210 cubic metres per second 7 400 cu ft s of water and when generating they discharge up to 276 cubic metres per second 9 700 cu ft s 2 1 Tanbara DamLocation of Tanbara Dam in JapanCountryJapanLocationNumataCoordinates36 46 29 N 139 03 46 E 36 77472 N 139 06278 E 36 77472 139 06278StatusOperationalConstruction began1973Opening date1981Owner s TEPCODam and spillwaysType of damEmbankment rock fillImpoundsHotchi RiverHeight116 m 381 ft Length570 1 m 1 870 ft Elevation at crest1 177 m 3 862 ft Width crest 12 m 39 ft Width base 550 m 1 800 ft Dam volume5 435 000 m3 7 109 000 cu yd ReservoirTotal capacity14 800 000 m3 12 000 acre ft Active capacity13 000 000 m3 11 000 acre ft Catchment area6 5 km2 2 5 sq mi Surface area57 ha 140 acres Normal elevation1 173 m 3 848 ft Power StationCommission date1986Hydraulic head518 m 1 699 ft effective Turbines4 x 300 MW 400 000 hp Francis pump turbinesInstalled capacity1 200 MW 1 600 000 hp See also edit nbsp Japan portal nbsp Water portal nbsp Renewable energy portal List of power stations in Japan List of pumped storage hydroelectric power stationsReferences edit nbsp Wikimedia Commons has media related to Tambara Dam a b Tokyo Electric Power Co power plant Tamahara in Japanese Suiryoku Retrieved 17 February 2012 Hydropower amp Dams in South and East Asia PDF Hydropower and Dams p 9 Retrieved 3 October 2010 Retrieved from https en wikipedia org w index php title Tamahara Dam amp oldid 1082422351, wikipedia, wiki, book, books, library,
